Finding the Third Proportional to 64,856.25 and 140,080.50

Step by Step Solution

1. Step 1: Write the proportion equation
   64,856.25 : 140,080.50 = 140,080.50 : x
2. Step 2: Convert to fraction form
   64,856.25/140,080.50 = 140,080.50/x
3. Step 3: Cross multiply
   64,856.25x = 140,080.50 × 140,080.50
4. Step 4: Simplify right side
   64,856.25x = 19,622,546,480.25
5. Step 5: Solve for x
   x = 19,622,546,480.25/64,856.25
6. Step 6: Final answer
   x = 302,554.44